Radar Help

Ive been making a map in Assualt Cube, it was map size 7, but i increased it up 2 sizes because i had used up that space in the corner. When i increased it to mapsize 9, the radar was fine. High rez- easy to guide radar. But after adding 1 room, the radar messed up and its magnified.

Did i press anything to do this or is this map related? Any keys?

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Side Note:My new name is 'Blahthing' However my maps will still be named with Manfestoeh